Learning to read an ECG is a valuable skill used by healthcare professionals to assess the electrical activity of the heart. While a comprehensive understanding of ECG interpretation requires medical training, I can provide you with a basic overview to get you started. Please note that this information is for educational purposes only, and if you suspect any heart-related issues, it's crucial to consult a healthcare professional.

Here's a simplified guide to reading an ECG:

Understand the paper
An ECG is recorded on graph paper that typically runs at a speed of 25 millimeters per second (mm/s).
The paper is divided into small squares, with larger squares created by grouping five small squares.

Identify the leads
An ECG uses multiple leads, which are specific views of the heart's electrical activity.
The standard ECG has 12 leads, with each lead representing a different angle or perspective of the heart.

Recognise the waves
The ECG waveform consists of several waves:
P wave: represents atrial depolarization (contraction).
QRS Complex: Represents ventricular depolarization (contraction).
T wave: represents ventricular repolarization (relaxation).